A tendon on the right lower jaw is thick, hard and painful

The chin is close to the neck, and there are many lymph nodes distributed on the neck. When these lymph nodes become inflamed, it will not only cause discomfort in the neck, but also cause discomfort in the chin. The most common thing that happened in life was that I found a tendon on the right side of my chin that was stiff and painful. This is usually caused by lymphatic problems, but there may be other reasons. Only when people find the real cause can they better treat it. Please explain in detail why a tendon in the right chin becomes thick, hard and painful.

1. Muscle strain

Common causes of muscle strain are acute muscle sprain and chronic cumulative injury, which often occur when muscles are excessively active or when muscles are under prolonged tension in a static posture, leading to congestion and edema of muscle fibers and accumulation of metabolic products such as lactic acid. Continuous strain may even cause degeneration, necrosis, and fibrosis of some muscle fibers. Or the muscles may feel locally cold, or it may be caused by abnormal anatomical position of the muscles after a sprain, and repeated pulling, and it may also be related to the body's immune disorder. Acute muscle strain is usually caused by excessive stretching or excessive load on the muscles, which leads to partial tearing or even rupture of the muscles. Muscle strain is also one of the most common injuries among office workers.

2. Reactive lymphatic hyperplasia

The degree of lymph node enlargement varies, sometimes reaching 10 cm. Microscopically, the composition and distribution of reactive lymph node hyperplasia vary due to different causes of the disease. Antigen substances that stimulate B cells mainly cause the proliferation and enlargement of lymph follicles and the expansion and proliferation of germinal centers; antigen substances that stimulate T cells mainly cause the proliferation of parafollicular lymphocytes. Some antigens mainly cause proliferation of tissue cells in the lymphatic sinuses.

3. Swelling of the throat

Throat swelling is one of the most common symptoms that occurs during the colder months of the year. Colds, tonsillitis, sinusitis, whooping cough, pharyngitis, and viral infections are often accompanied by a sore throat. Most acute throat swellings go away on their own within a few days to a few weeks; however, if the pain persists or gets worse over a few days, you should see a doctor. Because, if left untreated for a long time, the disease may lead to rheumatic fever, which can harm the heart and kidneys.